Here's a few that I run into quite frequently;
Doggie shower in garage and/or mudroom
Clothes washers in Master bedrooms, or on every level of the house
His and hers Master Bathrooms, complete with all the things that each gender loves (magazine racks, built in tv, gray marble and chrome decor, multi head HUGE shower complete with ever so cool trench drain and an automatic water wash slab of stone used as a urnial, for him. Hers had a steam shower with multi head auto function, bidet, white marble EVERYTHING, heated floors, built in pedicure/foot massage chair, large soaking infiniti tub with european fill, towel warming oven, tv and 20' high atrium ceiling.) SHEESH! You walk down the Hall into an open foyer, on the left was his and on the right was hers, no doors. Kinda cool but strange at the same time. The bedroom had a 10' high fountain in the middle of foyer.
I'm also staring to see more built in counter steamers in the kitchen.
And don't forget the Meile built in coffee station. A must have for today's rich people.